CN113900187A - Fiber polarization control device and method based on Lyot effect - Google Patents
Fiber polarization control device and method based on Lyot effect Download PDFInfo
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- CN113900187A CN113900187A CN202111192603.2A CN202111192603A CN113900187A CN 113900187 A CN113900187 A CN 113900187A CN 202111192603 A CN202111192603 A CN 202111192603A CN 113900187 A CN113900187 A CN 113900187A
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- optical fiber
- polarization
- ceramic
- ferrule
- cartridge clip
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2726—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3812—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres having polarisation-maintaining light guides
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses an optical fiber polarization control device and method based on the Lyot effect, which comprises a left polarization-maintaining optical fiber jumper wire, a right polarization-maintaining optical fiber jumper wire and a ceramic cartridge clip for connecting the left polarization-maintaining optical fiber jumper wire and the right polarization-maintaining optical fiber jumper wire, wherein the ceramic cartridge clip is an open sleeve inside an optical fiber flange plate, each polarization-maintaining optical fiber jumper wire comprises a polarization-maintaining optical fiber, one end of each polarization-maintaining optical fiber is connected with an optical fiber connector, the other end of each polarization-maintaining optical fiber is connected with an optical fiber ceramic ferrule, the left optical fiber ceramic ferrule is coaxially inserted into a clamping hole of the ceramic cartridge clip at the left end of the ceramic cartridge clip, the right optical fiber ceramic ferrule is coaxially inserted into a clamping hole of the ceramic cartridge clip at the right end of the ceramic cartridge clip, and the end faces of the left optical fiber ceramic ferrule and the right optical fiber ceramic ferrule inserted into the clamping hole of the ceramic cartridge clip are in contact in the clamping hole. The invention uses the ceramic cartridge clip to connect the end surfaces of the two optical fiber ceramic ferrules, and realizes the control of the output polarization state by rotating the relative position of the two optical fiber ceramic ferrules in 360 degrees of the cross section vertical to the axial direction.
Description
Technical Field
The invention relates to an optical fiber communication technology, in particular to an optical fiber polarization control device and method based on the Lyot effect.
Background
Polarization control and polarization positioning problems are often encountered in the fields of fiber optic communications, optical device testing, and fiber optic sensing. Currently, most of the commonly used polarization control and polarization positioning methods use mechanical and electrical fiber Polarization Controllers (PCs).
Besides high price, the repetition precision of the electric control type optical fiber polarization controller is difficult to meet certain specific requirements.
Mechanical fiber polarization controllers are widely used due to their low cost and ease of use. However, the biggest disadvantage of the mechanical fiber polarization controller is the limited polarization state maintaining time, because the fiber is clamped in a mechanical device (V-groove), and the polarization state of the output of the fiber is controlled by rotating and pressing the fiber, but the determined polarization state of the output of the fiber cannot be maintained for a long time due to the creeping property of the fiber.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a fiber polarization control device and method based on the Lyot effect for keeping the output polarization state of the fiber determined for a long time.
The optical fiber polarization control device based on the Riao effect can solve the technical problems and comprises a left polarization-maintaining optical fiber jumper wire, a right polarization-maintaining optical fiber jumper wire and a ceramic cartridge clip for connecting the left polarization-maintaining optical fiber jumper wire and the right polarization-maintaining optical fiber jumper wire, wherein the ceramic cartridge clip is an opening sleeve inside an optical fiber flange plate, each polarization-maintaining optical fiber jumper wire comprises a polarization-maintaining optical fiber, one end of each polarization-maintaining optical fiber is connected with an optical fiber connector, the other end of each polarization-maintaining optical fiber is connected with an optical fiber ceramic ferrule, the left optical fiber ceramic ferrule is coaxially inserted into a clamping hole of the ceramic cartridge clip at the left end of the ceramic cartridge clip, the optical fiber ceramic ferrule on the right side is coaxially inserted into a clamping hole of the ceramic cartridge clip at the right end of the ceramic cartridge clip, and the end faces of the left optical fiber ceramic ferrule and the right optical fiber ceramic ferrule inserted into the clamping hole of the ceramic cartridge clip are in contact in the clamping hole.
The invention is designed based on the Lyot effect, the Lyot effect is that an input polarization maintaining optical fiber and an output polarization maintaining optical fiber are used for carrying out slow axis (or fast axis) rotation 45-degree connection (generally, fusion connection is carried out by a polarization maintaining optical fiber fusion splicer), the length ratio of the output polarization maintaining optical fiber to the input polarization maintaining optical fiber is 2 to 1, and homogenization of input linearly polarized light can be realized.
Further, the length of the inner hole of the ferrule of the optical fiber ceramic ferrule is designed to be 16 +/-0.2 mm, the aperture of the inner hole of the ferrule of the optical fiber ceramic ferrule is designed to be phi 0.1254+0.0008-0mm, and the outer diameter of the ferrule of the optical fiber ceramic ferrule is designed to be phi 2.499 +/-0.0005 mm; the length of the ceramic cartridge clip is designed to be 10mm, and the inner diameter of a clip hole of the ceramic cartridge clip is designed to be phi 2.499-0.0005 mm.
The polarization state of the output of the optical fiber is controlled by adopting an optical fiber polarization control device based on the Lyot effect, and the operation scheme is as follows:
1. in a section perpendicular to the axial direction, the angle of the left optical fiber ceramic ferrule or the angle of the right optical fiber ceramic ferrule is manually rotated, and the control of the output polarization state of the optical fiber is realized by changing the relative angular position between the left and right optical fiber ceramic ferrules.
2. In a cross section perpendicular to the axial direction, the left and right optical fiber ceramic ferrules are manually and reversely rotated at the same time, and the control of the output polarization state of the optical fiber is realized by changing the relative angular position between the left and right optical fiber ceramic ferrules.
The invention has the beneficial effects that:
the invention relates to an optical fiber polarization control device and method based on the Lyot effect, which are realized by movably interconnecting a pair of polarization-maintaining optical fiber jumpers, in particular to a device and method for realizing the control of the output polarization state of an optical fiber by connecting two optical fiber ceramic ferrules by using a ceramic cartridge clip and changing the relative angle position (within 360 degrees) on the section vertical to the optical fiber by rotating the two optical fiber ceramic ferrules.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the polarization maintaining optical fiber jumper in the embodiment of fig. 1.
And (3) identifying the figure number: 1. an optical fiber connector; 2. a polarization maintaining optical fiber; 3. an optical fiber ceramic ferrule; 4. a ceramic cartridge clip.
Detailed Description
The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.
The invention relates to an optical fiber polarization control device based on the Lyot effect, which comprises a middle ceramic cartridge clip 4 and two asymmetric polarization-maintaining optical fiber jumpers arranged on the left side and the right side of the ceramic cartridge clip 4, wherein the ceramic cartridge clip 4 adopts an opening sleeve inside an optical fiber flange plate, each polarization-maintaining optical fiber jumper comprises a polarization-maintaining optical fiber 2 (the lengths of the left polarization-maintaining optical fiber 2 and the right polarization-maintaining optical fiber 2 are the same), one end of each polarization-maintaining optical fiber 2 is connected with an optical fiber connector 1, the other end of each polarization-maintaining optical fiber 2 is connected with an optical fiber ceramic ferrule 3, and the end face of the insertion end of the optical fiber ceramic ferrule 3 is provided with a chamfer; the left optical fiber ceramic ferrule 3 is coaxially inserted into a clamping hole (i.e., an open-ended tube hole) of the ceramic cartridge clip 4 at the left end of the ceramic cartridge clip 4, the right optical fiber ceramic ferrule 3 is coaxially inserted into the clamping hole (i.e., an open-ended tube hole) of the ceramic cartridge clip 4 at the right end of the ceramic cartridge clip 4, and the end faces (PC type or UPC type) of the left and right optical fiber ceramic ferrules 3, which are inserted into the clamping hole (i.e., an open-ended tube hole) of the ceramic cartridge clip 4 two by two, are in contact with each other in the clamping hole, as shown in fig. 1 and 2.
In the structure, the length of the optical fiber ceramic ferrule 3 is designed to be 16 +/-0.2 mm, the ferrule outer diameter of the optical fiber ceramic ferrule 3 is designed to be 2.499 +/-0.0005 mm, and the bore diameter of the inner bore of the ferrule of the optical fiber ceramic ferrule 3 is designed to be 0.1254+0.0008-0 mm.
In the above structure, the length of the ceramic cartridge holder 4 is designed to be 10mm, and the inner diameter of the holder hole (i.e., the tube hole of the split sleeve) of the ceramic cartridge holder 4 is designed to be 2.499-0.0005 mm.
In the structure, the manufacturing method of the left and right polarization-maintaining optical fiber patch cord comprises the following steps:
cutting off a commercial polarization maintaining optical fiber 2 from the middle, removing a loose tube with proper length at the cutting position by a blade, removing an optical fiber coating layer with proper length to expose a bare fiber, cleaning the bare fiber by alcohol, coating the surface of the bare fiber by epoxy resin glue, penetrating into an insertion core inner hole of an optical fiber ceramic insertion core 3, stretching the bare fiber back and forth to enable the epoxy resin glue to fully fill the gap of the insertion core inner hole, and grinding and polishing the end face of the insertion end of the optical fiber ceramic insertion core 3 after the epoxy resin glue is cured.
In the above structure, the manufacturing method of the ceramic cartridge clip 4 comprises the following steps:
connecting screws in two threaded holes in the upper left corner and the lower right corner of a commercial symmetrical optical fiber flange plate are taken out by a cross screwdriver, an opening sleeve in the optical fiber flange plate and two metal components of an outer sleeve are taken out, and the two metal components are bonded and cured by epoxy resin glue.
The invention relates to an optical fiber polarization control method based on a Lyot effect, which has the operation scheme that:
the control of the output polarization state is achieved by rotating the relative positions of the two fiber ceramic ferrules 3 within a 360 DEG range of the cross section perpendicular to the axial direction.
1. In a section perpendicular to the axial direction, the angle of the left fiber ceramic ferrule 3 or the angle of the right fiber ceramic ferrule 3 is manually rotated, and the control of the output polarization state of the optical fiber is realized by changing the relative angular position between the left and right fiber ceramic ferrules 3.
2. In the section perpendicular to the axial direction, the left and right optical fiber ceramic ferrules 3 are manually rotated reversely by the angle, and the control of the output polarization state of the optical fiber is realized by changing the relative angular position between the left and right optical fiber ceramic ferrules 3.
The above-described embodiments are only specific examples for further explaining the object, technical solution and advantageous effects of the present invention in detail, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the disclosure of the present invention are included in the protection scope of the present invention.
Claims (3)
1. The fiber polarization control device based on the Lyot effect is characterized in that: the optical fiber cable comprises a left polarization-maintaining optical fiber jumper wire, a right polarization-maintaining optical fiber jumper wire and a ceramic cartridge clip (4) for connecting the left polarization-maintaining optical fiber jumper wire and the right polarization-maintaining optical fiber jumper wire, wherein the ceramic cartridge clip (4) is an opening sleeve inside an optical fiber flange plate, each polarization-maintaining optical fiber jumper wire comprises a polarization-maintaining optical fiber (2), one end of each polarization-maintaining optical fiber (2) is connected with an optical fiber connector (1), the other end of each polarization-maintaining optical fiber (2) is connected with an optical fiber ceramic ferrule (3), the left optical fiber ceramic ferrule (3) is coaxially inserted into a clamping hole of the ceramic cartridge clip (4) at the left end of the ceramic cartridge clip (4), and the end faces of the left optical fiber ceramic ferrule (3) and the right optical fiber ceramic ferrule (3) on the right side are in contact with each clamping hole at the right end of the ceramic cartridge clip (4).
2. The fiber polarization control device based on the lyocell effect of claim 1, wherein: the length of an inner hole of the ferrule of the optical fiber ceramic ferrule (3) is 16 +/-0.2 mm, the aperture of the inner hole of the ferrule is phi 0.1254+0.0008-0mm, and the outer diameter of the ferrule of the optical fiber ceramic ferrule (3) is phi 2.499 +/-0.0005 mm; the length of the ceramic cartridge clip (4) is 10mm, and the inner diameter of a clip hole of the ceramic cartridge clip (4) is phi 2.499-0.0005 mm.
3. The method for controlling polarization of fiber based on the lyocell effect is characterized in that the fiber polarization control device based on the lyocell effect according to claim 1 or 2 is used to control the polarization state of the fiber output, and the operation scheme is as follows:
firstly, in a section perpendicular to the axial direction, manually rotating the angle of the left optical fiber ceramic ferrule (3) or the angle of the right optical fiber ceramic ferrule (3), and realizing the control of the optical fiber output polarization state by changing the relative angle position between the left and right optical fiber ceramic ferrules (3);
secondly, in the section perpendicular to the axial direction, the angles of the left and right optical fiber ceramic ferrules (3) are manually and reversely rotated, and the control of the output polarization state of the optical fiber is realized by changing the relative angle position between the left and right optical fiber ceramic ferrules (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111192603.2A CN113900187B (en) | 2021-10-13 | 2021-10-13 | Optical fiber polarization control device and method based on Coriolis effect |
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| CN202111192603.2A CN113900187B (en) | 2021-10-13 | 2021-10-13 | Optical fiber polarization control device and method based on Coriolis effect |
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| CN113900187A true CN113900187A (en) | 2022-01-07 |
| CN113900187B CN113900187B (en) | 2023-08-29 |
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Citations (9)
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| US20040177651A1 (en) * | 2003-03-13 | 2004-09-16 | Fujikura Ltd. | Method of and apparatus for aligning the stress-applying parts of polarization-maintaining optical fiber, and method of and apparatus for manufacturing a polarization-maintaining coupler |
| US20050174919A1 (en) * | 2004-02-09 | 2005-08-11 | Shih-Chieh Chang | Optical polarization controller |
| US20080112664A1 (en) * | 2006-11-10 | 2008-05-15 | Gwangju Institute Of Science And Technology | In-line polarization-state converter |
| CN202339422U (en) * | 2011-11-30 | 2012-07-18 | 杭州电子科技大学 | Hand-operated optical-fiber squeezing type polarization controller |
| CN203069821U (en) * | 2013-03-04 | 2013-07-17 | 中国电子科技集团公司第二十六研究所 | Polarization maintaining fiber acousto-optic frequency shifting device |
| CN106785868A (en) * | 2016-12-30 | 2017-05-31 | 中国电子科技集团公司第三十四研究所 | A kind of laser polarization state control stabilising arrangement and control antihunt means |
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2021
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| US20050174919A1 (en) * | 2004-02-09 | 2005-08-11 | Shih-Chieh Chang | Optical polarization controller |
| US20080112664A1 (en) * | 2006-11-10 | 2008-05-15 | Gwangju Institute Of Science And Technology | In-line polarization-state converter |
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